JPS6252718B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention realizes easy-to-read printing by controlling the feed of character printing in the line direction, and particularly relates to a printing device that is capable of printing lines with the same width as conventional printing.

Generally, on a typewriter, the width of one character is constant, and the length of each word (number of characters x width) is determined by the number of characters, but if you look at the width of each character, it will be M or W.
is wider than i, etc., so it looks irregular if the character width is the same. For this reason, it is possible to achieve easy-to-read printing by finely moving the line direction feed and performing a unique line direction feed for each character. On devices, each character width on a CRT display is the same, so the CRT display and print do not match. For example, on a word processor, etc.
Since the text is proofread by looking at the CRT display and the results are printed, if the printout and CRT display are different, this will affect the arrangement of the text, which is not a good idea.

The present invention takes the above points into consideration and provides a printing device that prints sentences of the same length as a whole, although the line direction feed is changed for each character.

The figure is a block diagram showing an embodiment of the present invention.

In the figure, reference numeral 1 denotes a keyboard, which has alphabet keys, numeric keys, and function keys, and provides a signal to the key control unit 2 when a key is pressed. The key control section 2 updates the address register 3 in the case of numeric and alpha alphabet signals, writes a new key signal in the data memory 4, and performs processing according to the function in the case of a function key signal, and when printing is necessary. At the same time, a part or all of the contents of the data memory 4 are read out and given to the drive circuit 6 via the print register 5, and at the same time, a print command (Pr) is directly sent to the drive circuit 6.
and the printer 7 prints.

The contents of the data memory 4 are always displayed on the display device 8.
It is displayed on the CRT with regular intervals between each letter or number. The user can change or add data in the data memory 4 while looking at the CRT display.

9 is a code conversion ROM that outputs a carriage width (line direction feed width) specific to each character or number. For example, for "i", it outputs "3" corresponding to 3/60 inch, and It is applied to the drive circuit 6 via the register 10, and advances the printer 7 in the line direction by 3/60 inch before printing. A1 and A2 are AND gates, and in the case of a carriage return (CR) or space (SP), a signal for the carriage width is sent to the carriage register 1 via the AND gate A2.
0, otherwise and gate A
Given from 1.

Reference numeral 11 denotes an output circuit which always supplies a carriage width corresponding to 6/60 inches to the standard register 12 in response to keys including the space key and the carriage return key, and stores the cartridge width in the standard register 12 in an accumulated manner. Further, the output of the above AND gate A1 is applied to a summation register 13, which cumulatively stores the carriage width of each character or number. The outputs of both registers 12 and 13 are connected to a comparison circuit 14, their contents are compared, and the difference is given to AND gate A2. Further, the contents of both registers 12 and 13 are cleared by the output of the delay circuit 15 or by the clear signal C output after a certain period of time when the space key or carriage key is pressed.

For example, the printer 7 is capable of printing about 10 characters per inch, and can print at least 1/60 inch in the line direction, and normal characters are 6/60 = 1/10.
Since it is in inches, it moves every 6 units.

Next, the operation will be explained. First, input data using numbers or alphanumeric characters from keyboard 1,
The user instructs the address register 3 via the key control unit 2, writes data to a predetermined position in the data memory 4, and views the contents on the display device 8.
When changing the written contents, the user similarly indicates the cursor position on the display device 8 from the keyboard 1, and adds or deletes using the correction key.
The data memory 4 is usually composed of RAM, and its contents are constantly read out for display on the CRT screen of the display device 8. On the display device 8, each character is displayed at regular intervals in correspondence with the address of the data memory 4.

When a function key signal is generated from the keyboard 1, searches in the data memory 4, data exchange with peripheral devices, etc. are executed based on the key signal. In that case, if printing is required, a printing command (Pr) is given from the key control section 2 to the drive circuit 6, and printing is started. Data to be printed is then transferred from the data memory 4 via the print register 5 and printed by the printer 7. At this time, the character signal from data memory 4 is ROM9
Also, the line direction feed information corresponding to each character is sent to the carriage register 10 via the AND gate A1, and the printer 7 is moved by the unique carriage width of the corresponding character before printing. Since the other input of the AND gate A1 is not a carriage return (CR) or space (SP) signal, an output is generated from the AND gate A1 by a negative input. No output is generated from one AND gate A2.

At the same time, AND gate A1 is added to total register 13.
A numerical value corresponding to the carriage width specific to each character is introduced and accumulated from . A character signal is also applied to the output circuit 11, and a numerical value corresponding to a carriage width common to each character, for example "6", is outputted and stored cumulatively in the standard register 12. The above cumulative storage is performed for each character, and the comparison circuit 14 compares the characters, and the difference is led to the AND gate A2. Both registers 12 and 13 are cleared to "0" by the output of the delay circuit 15 for each word.

Therefore, at the end of each word, the comparison circuit 14 outputs the difference between the standard carriage width and the unique carriage width for each word. For example, when printing “WORD”, the standard register 12 has 6 digits for each character.
Therefore, 6 x 4 = 24 is the number corresponding to the carriage width, but if the numbers corresponding to the unique carriage width of each character are 8, 6, 6, and 5, then 8 + 6 + 6
+5=25.

Subsequently, when a space signal is output from the data memory 4, AND gate A1 is closed and AND gate A2 is opened. At this time, the output circuit 11
Due to the output of , the standard register 12 is further added 6 to 30, and since the summation register 13 remains unchanged, the comparison circuit 14 outputs the difference 30-25=5. This output is given to the carriage register 10, which moves the printer 7 by 5/60 inches via the drive circuit 6, controlling the word carriage width including spaces to always be the number of characters x 6 = standard carriage width. be done. Thereafter, a clear signal for both registers 12 and 13 is generated from the delay circuit 15, and the registers are returned to their initial states. By repeating the above operations, the standard carriage width and the carriage width of the printed text always become the same, and the display arrangement of the display device 8 and the printed text become the same.

The above example is a case where the contents of the data memory 4 are printed, but the same applies to a case where the contents are directly printed based on a signal from the keyboard 1.

In the above example, the total register 13 and the standard register 12 accumulate input numerical values in a counter format, but a separate adding device may be provided to store the accumulated values.

Further, the clear signal C from the keyboard 1 to the delay circuit 15 may be directly applied to the total register 13 or the standard register 12.

Further, in the above example, printing is performed for each character, but the same applies when printing in units of words or lines.
Therefore, it can also be used with dot-type printers other than stamping type.

As described above, the present invention includes a first storage device that cumulatively stores a unique character width for each output of a character signal, and a second storage device that cumulatively stores a specified amount of character width for each output of a character signal and a space signal. , a comparison means is provided for comparing the values of the first and second storage devices for each space or carriage return to generate a difference output, and the space width is adjusted by moving the space in the row direction based on the output of the comparison means. Since the overall length is defined by the space width for each space or carriage return, accurate and easy-to-read printing can be performed.

[Brief explanation of the drawing]

The figure is a block diagram showing one embodiment of the present invention, in which 1 is a keyboard, 2 is a keyboard control section, 4 is a data memory, 7 is a printer, 1
2 is a standard register, 13 is a summation register, and 14 is a comparison circuit.

Claims (1)

[Claims] 1. A means for outputting a character width specific to each character to be printed, a means for outputting a specified amount of character width for each character, and a means for outputting a character signal according to the unique character width output from the means. means for performing printing by performing line direction feeding; a first storage device that cumulatively stores a unique character width for each output of a character signal; and a second storage device that cumulatively stores a specified amount of character width for each output of a character signal and a space signal. memory, first and second for each space signal
1. A printing device comprising a comparing means for comparing values in a memory device and generating a difference output, and based on the output of the comparing means, the printing means moves the space in the row direction to adjust the space width and print.